Function AddArtificialOffsetInChildArray

cpp/src/arrow/ipc/test_common.cc:632–639

namespace {

Status AddArtificialOffsetInChildArray(ArrayData* array, int64_t offset) {
  auto& child = array->child_data[1];
  auto builder = MakeBuilder(child->type).ValueOrDie();
  ARROW_RETURN_NOT_OK(builder->AppendNulls(offset));
  ARROW_RETURN_NOT_OK(builder->AppendArraySlice(ArraySpan(*child), 0, child->length));
  array->child_data[1] = builder->Finish().ValueOrDie()->Slice(offset)->data();
  return Status::OK();
}

}  // namespace